Caitlin Clarke was an American theater and film actress best known for her role as Valerian in the 1981 fantasy film Dragonslayer and for her role as Charlotte Cardoza in the 1998–1999 Broadway musical Titanic.

Dragonslayer is a 1981 American dark fantasy film directed by Matthew Robbins from a screenplay he co-wrote with Hal Barwood. It stars Peter MacNicol, Ralph Richardson, John Hallam, and Caitlin Clarke. It was a co-production between Paramount Pictures and Walt Disney Productions, where Paramount handled North American distribution and Disney's Buena Vista International handled international distribution. The story is set in a fictional medieval kingdom where a young wizard encounters challenges as he hunts a dragon, Vermithrax Pejorative.